Figure 2From: Paradox of low field enhancement factor for field emission nanodiodes in relation to quantum screening effectsEnergy band diagram of the electron field emission. (a) Normal and (b) strong applied electrostatic bias fields in a FE nanodiode. The dashed line shows the potential distribution for a FE microdiode, with a distant anode (not shown here) and a very large anode-to-cathode distance.Back to article page